Saving garage space - Putting bathroom under stairs

[gsebast1]

Hoping that someone has done this. To save space in my new garage build I'm wanting to put a really small bathroom under the staircase. I'm talking just a sink and toilet so a really small bathroom.

The ceiling in the garage will be 12 feet high so it seems like there should be room under the stairs but the architect said there wouldn't be enough headroom.

Has anyone done this before or have a clever idea how to do it?
Photos would be great.

 

[Bighead38]

Bathroom should be easy. This guy put a whole car under the stairs.

 

[PugetDude]

People have been putting half-baths under stairs since Thomas Crapper invented the flush commode.

Issue is headroom. Follow the code guidelines and you'll be fine:

https://www.iccsafe.org/forum/intl-...ding-powder-room-under-stairs-head-clearance/

Lots of ideas here.

https://www.google.com/search?q=pow...AhUI9GMKHZHmD8wQ9C8IHA&biw=1366&bih=619&dpr=1

 

[tjdux]

If the architect won't design it then have the contractor install plumbing and put it in yourself.

Pretty odd that he is working for you but will not do what you want...

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[Stuart in MN]

The headroom will depend on where you put the fixtures, of course. That's easy enough to figure out on paper if they will fit. You also will have to run the vent stack up from the toilet, so figure out if that will fit around the stairs.

 

[Boilerhouse]

I have one. Lots of room! Area roughly 3' x 7'. There is seven feet of head room above the sink. There is 10 inches of head room sitting on the can and I am taller than average. Above the seven foot head-space at the sink is an exhaust fan.

 

[SKaReCRoW]

There's a half bath under the stairs in my house. Once you're in the bathroom there's plenty of headroom (and tons of storage space too), but I hit my head (usually very hard) almost every time I go in or out of it. I'm about 6'4".

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[Farrier]

You can build it two ways. Either hit your head when ya bend over to wipe, or hit your head when you pull up your trousers. Take your pick.

 

[kbs2244]

Easy to do.
My only complaint about the ones I have used is that stairs can be a bit narrow.

It cuts down on the elbow room.

 

[Red Voodoo]

You might consider putting the sink on the outside wall of the bathroom (not on the exterior of the building!), so it's accessible from the work area. I'm actually doing this in my build right now.

 

[ard]

There are a million hits on google image for 'bathroom under stairs'..thousands of plans.

But it is real simple:

Steps need to be 8 inch rise, 11 inch run, correct?

So 12 ft ceiling plus 1ft to top of next floor (ie floor joists) is 168 inches
\
168/8=21 so 21 steps

21 steps that are 11 inchs long each

Draw it out.

Basically door height is 80 inches or 10 rises- under that is not very useful. But that means you have 11 steps to use that are OVER 80 inches- so like 11x11=121"=10 feet.

Make the stairs 42" wide and your bath is 10x3 1/2 feet

 

[Big Dad]

Sister did it in her house .. It was just a bit cramped ( not sure if it was up to code ) but, worked well for the most part for the extra bedroom in basement

 

[southalabama]

Lived in a townhouse before I was married. Had half bath under the stairs. Toilet and sink mounted on wall. Ceiling height wasn't an issue. 7' height. I'm 5'11" so all good.
Lights were on wall and exhaust fan was almost flush with the ceiling.

 

[mbshop]

I assume this is a private garage ? If so then as long as plumbing and such is up to code you should be good.
the idea of having the sink on the outside is a great idea.

 

[dw1]

You might consider putting the sink on the outside wall of the bathroom (not on the exterior of the building!), so it's accessible from the work area. I'm actually doing this in my build right now.

I did the same thing, I put a wash tub right outside the bathroom.